A soft metal or nonmetal sleeve, designed to mate with a pin-rivet. it may include an external wrenching facility which breaks off at a perdetermined torque to form a head.
NSN 5990-01-076-8901
NSN 5895-01-102-8303
NSN 6685-01-139-4132
NSN 6240-01-421-4025
NSN 5930-00-258-7450
NSN 5998-01-593-3479
NSN 6145-01-268-3816
NSN 5905-00-752-6885
NSN 6320-01-470-6826
NSN 5920-01-413-1219
NSN 2925-00-193-2402
NSN 7035-01-279-2815